Question

A 0.240 g pebble is fired at a speed of 14.6 m/s from the top of...

A 0.240 g pebble is fired at a speed of 14.6 m/s from the top of a 20.0 m tall building. Ignoring air resistance, find the kinetic energy with which the pebble strikes the ground when the pebble is fired vertically straight up.

A ball which is thrown straight up takes 3.50 s to reach the maximum height. Determine the gravitational potential energy of the ball (m = 0.145 kg) when it reaches the maximum height.

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A 0.240 g pebble is fired horizontally at a speed of 18.0 m/s from the top...
A 0.240 g pebble is fired horizontally at a speed of 18.0 m/s from the top of a 38.5 m tall building. Ignoring air resistance, find the momentum when the pebble reaches a height of 25.0 m.
A boy uses a slingshot to launch a pebble straight up into the air. The pebble...
A boy uses a slingshot to launch a pebble straight up into the air. The pebble reaches a height of 38.0 m above the launch point 1.0 seconds later. Assume air resistance is negligible. (a) What was the pebble's initial speed (just after leaving the slingshot)? 42.9 m/s (b) How much time did it take for the pebble to first reach a height of 19.0 m above its launch point? ? s You toss a tennis ball straight upward. At...
A ball is thrown upward with speed of 38.0m/s from top of building 240 m tall:...
A ball is thrown upward with speed of 38.0m/s from top of building 240 m tall: a) How long will it take to reach ground? b)how long will it take for this ball to reach the highest point. c) How long after ball is thrown will it be found 265 m above ground? d) What is velocity of ball as it reaches the ground ? e) what will be the velocity of this ball at the highest point? f) how...
A pebble is thrown vertically downwards with a velocity of 5 m/s, and impacts the ground...
A pebble is thrown vertically downwards with a velocity of 5 m/s, and impacts the ground at 10 m/s. If the pebble was thrown vertically upwards from the same height with the same initial sped, with what velocity would it impact the ground after falling back down?
A model rocket is fired straight up from the top of a 55-m-tall building. The rocket...
A model rocket is fired straight up from the top of a 55-m-tall building. The rocket has only enough fuel to burn for 3.0 s. But while the rocket engine is burning fuel, it produces an upward acceleration of 60 m/s2. After the fuel supply is exhausted, the rocket is in free fall and just misses the edge of the building as it falls back to the ground. Ignoring air resistance, calculate 1. Determine the height above the ground of...
A ball is thrown vertically upwards with an initial velocity of 10 m/s, from a platform...
A ball is thrown vertically upwards with an initial velocity of 10 m/s, from a platform that is at a height of 75 m above the ground. The ball reaches a maximum height and, on the way down, misses the platform and falls all the way to the ground. Take the magnitude of the acceleration due to gravity to be 10 m/s2. (a) What is the velocity of the ball just before it reaches the ground? (b) How many seconds...
A man throws a ball straight upward with speed 30 m/s from the top of a...
A man throws a ball straight upward with speed 30 m/s from the top of a building that is 75 m high. Ignore air resistance and choose the vertical y-axis to be positive downward with origin at the point of throw (top of the building). Represent the initial velocity and the acceleration vectors in the reference y-axis above. Find the maximum height the ball reaches with respect to the ground. How long does it take the ball to reach the...
A blue ball is thrown upward with an initial speed of 21.2 m/s, from a height...
A blue ball is thrown upward with an initial speed of 21.2 m/s, from a height of 0.5 meters above the ground. 2.6 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 11.7 m/s from a height of 25.7 meters above the ground. The force of gravity due to the earth results in the balls each having a constant downward acceleration of 9.81 m/s2. A) What is the speed of the...
A ball, mass is 8 kg, is thrown from the top of a 30 m cliff...
A ball, mass is 8 kg, is thrown from the top of a 30 m cliff with a velocity of 20 m/s straight up. The ball misses the cliff on the way down. Ignore air resistance. Use work and conservation of energy to find the following values. a. what is the work done by gravity while the ball is in the air? b. what is the maximum height of the ball? c. what is the magnitude of the velocity just...
A marble is thrown horizontally with a speed of 22.1 m/s from the top of a...
A marble is thrown horizontally with a speed of 22.1 m/s from the top of a building. When it strikes the ground, the marble has a velocity that makes an angle of 46 ° with the horizontal. From what height above the ground was the marble thrown?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT